JPS604762B2 - concrete pipe forming machine - Google Patents

Description

[Detailed description of the invention] This invention relates to a concrete pipe forming machine.

Concrete pipe forming machines that generally use vibration for compaction generate loud noises due to the vibrators installed in the formwork, thereby causing noise pollution. ．． In addition, this type of molding machine has the formwork, formwork extraction device, material supply device, compaction device, and drive devices for each of these devices all mounted on one machine frame, and the height of the formwork is 3. Therefore, the entire structure is very large, and the equipment costs are therefore high.Also, depending on the size of the concrete pipe used to form such a large formwork, it is necessary to replace it with one of a different size.
Since it is not possible to replace the equipment installed in correspondence with the formwork, such as the formwork puller or vibrator, without removing it,
There was a drawback that the replacement work required a long time. Therefore, the present invention eliminates noise by installing the formwork equipped with a vibrator, which is the source of noise, in a hole dug underground and completely separated from the material supply device, pressing device, and pulling machine. In addition, the mechanisms of the material supply porridge device, pressing machine, and lifting machine are simplified, and the lifting machine allows molds to be replaced in a short time.

First, to explain the embodiment with reference to the drawings, 1 is a vertical hole dug underground on the ground surface g, and a plywood 3 supported by a vibration isolating material 2 is installed at the bottom of the vertical hole. In this case, a cylindrical core frame 4 or core frames 4 of different shapes as shown in FIGS. 3 to 5, for example, are fixed in place by bottle tightening or the like.

A vibrator 5 is loaded on the core frame 4, and a bully 5' of the vibrator 5 is linked to a motor 6. 7 is a core frame 4 which serves as a receiving ring for the input material.
It is braced at the bottom of the board and remounted on the plywood board 3.

An outer frame 8 having a substantially similar shape to the core frame 4 is inserted outside the core frame 4 so as to be able to be pulled up, and its lower end is attached to the receiving ring 7. Also, on the upper edge of the outer frame 8, there is a tsuba 10 that is approximately parallel to the ground surface g.
is formed, and this 10 has hooks 13, which are supported on the ground surface g and engage hangings 12, 12 from the crane 11, if necessary.
13 can be installed freely. Formwork m inside the hidden hole 1
A material supply device f, which is equipped with a hopper 14 and a belt conveyor 15 on one side, is moved forward and backward or left and right on the ground alternately, with rollers 17 and 1
7, and a cylinder 19 suspended from a roller 18 that moves on the rail 16 on the other side, the piston 2 is a pressing device that is aligned with the pipe end of the desired shape. The press plate 21 of p is removably provided. Note that this pressing device p does not apply a forced load to the upper end of the molded tube, but rather presses the upper layer of the molded tube by the gravity of the pressing plate 21. Therefore, the cylinder 19 is for raising and lowering the press plate 21. A shows an end view of a molded egg-shaped concrete pipe, e shows an elliptical pipe, and c shows an end view of a square pipe. Since the concrete pipe forming machine of the present invention has the configuration described above, first, concrete material is fed into the form m from the conveyor 15, and when the feeding is finished, it is immediately moved as shown by the temporary line in FIG. evacuate,
In turn, the right pressing device p advances onto the formwork m. At the same time, the vibrator 5 is started to vibrate and compact the core frame 4, plywood 3, outer frame 8, etc., and then the plate 2 of the pressing device p
1 is pressed down to complete the molding. When the molding is completed in this way, the vibrator 5 is stopped and the crane 11 is lowered to lift the 1
2 and 12 and hooks 13 and 13 lying face down on the collar 10 are raised and engaged, and the outer form 8 is pulled up from the hard hole 1 together with the molded pipe and the receiving ring 7 and moved to a curing place. (Of course, it is also possible to pull up only the outer formwork 8 and take out only the product after giving it curing time and hardening properly.) As described above, the concrete pipe forming machine of the present invention uses a concrete pipe forming machine that uses a formwork that is dug underground. Since the hole is installed inside the hole as a frame, the vibration sound is reflected and refracted inside the hard hole, canceling each other out, and being significantly suppressed, so the propagation to the ground is stopped at an extremely low frequency, and the broken effect allows quiet molding. be.

In particular, in this invention, a large formwork is installed in a hole instead of a frame, making it possible to install the material supply device and pressing device on a lower level above the ground. Since it is made into a 4-type model and the overall configuration is simplified, equipment costs can be significantly reduced.

In addition, the formwork inside a hard hole, that is, the core frame, outer formwork, and receiving ring, can be easily lifted to the ground by a lifting machine by simply removing the fixing bolts of the core frame, so the replacement work is short. It is something that takes place over time. This equipment is not limited to only forming tubular bodies, but can also be used to mold outer forms, core frames, and pressing plates 2.
It is superior in versatility as it can be used relatively easily for molding all types of concrete building materials due to its length that allows it to change its shape.

[Brief explanation of drawings]

The attached drawings are an embodiment of the present invention, and Fig. 1 is a front view of a part thereof, Fig. 2 is a longitudinal sectional view of a pressing plate, and Fig. 3 is an end view of an egg-shaped concrete pipe using the same plate. FIG. 4 is an end view of an elliptical concrete pipe, and FIG. 5 is an end view of a square concrete pipe. Diagram of rhombus

Claims (1)

[Claims] 1. A base plate is installed on the bottom of a hard hole dug underground, and a core frame with a vibrator installed is integrally established on the base plate, and a concrete material is placed on the outside of this core frame at the lower end. The outer formwork with the ring attached thereto is inserted so that it can be pulled out, and a material supply device and a pressing device that can move forward and backward into the hard hole are installed on the ground, and a pulling machine for the outer formwork is installed directly above the hard hole. A concrete pipe forming machine characterized by the following equipment.